Medium discharging device and image reading apparatus

1. A medium discharging device comprising: a discharging unit that discharges a medium towards a medium discharging direction in which the medium is discharged; and a medium receiving tray that receives the medium discharged by the discharging unit, wherein the medium receiving tray includes a base tray; a first slidable unit that is slidably connected to the base tray, and that is configured to have a first accommodated state, and a first extended state, wherein when the first slidable unit is slid into the first extended state by pulling the first slidable unit in the medium discharging direction, the first slidable unit is located further in the medium discharging direction than when the first slidable unit is in the first accomodated state; and a second slidable unit that is slidably connected to the first slidable unit, and that is configured to have a second accommodated state, and a second extended state, wherein when the second slidable unit is slid into the second extended state by pulling the second slidable unit in the medium discharging direction, the second slidable unit is located further in the medium discharging direction than when the second slidable unit is in the second accomodated state; a third slidable unit that is slidably connected to the second slidable unit, and that is configured to have a third accommodated state, and a third extended state, wherein when the third slidable unit is slid into the third extended state by pulling the third slidable unit in the medium discharging direction, the third slidable unit is located further in the medium discharging direction than when the third slidable unit is in the third accomodated state; and a stopper that is rotatably attached to the third slidable unit, wherein the first slidable unit is located further in the medium discharging direction than the base tray.

2. A medium discharging device comprising: a discharging unit that discharges a medium towards a medium discharging direction in which the medium is discharged; and a medium receiving tray that receives the medium discharged by the discharging unit, wherein the medium receiving tray includes a base tray; a first slidable unit that is slidably connected to the base tray, and that is configured to have a first accommodated state, and a first extended state, wherein when the first slidable unit is slid into the first extended state by pulling the first slidable unit in the medium discharging direction, the first slidable unit is located further in the medium discharging direction than when the first slidable unit is in the first accomodated state; and a second slidable unit that is slidably connected to the first slidable unit, and that is configured to have a second accommodated state, and a second extended state, wherein when the second slidable unit is slid into the second extended state by pulling the second slidable unit in the medium discharging direction, the second slidable unit is located further in the medium discharging direction than when the second slidable unit is in the second accomodated state; a third slidable unit that is slidably connected to the second slidable unit, and that is configured to have a third accommodated state, and a third extended state, wherein when the third slidable unit is slid into the third extended state by pulling the third slidable unit in the medium discharging direction, the third slidable unit is located further in the medium discharging direction than when the third slidable unit is in the third accomodated state; and a stopper that is rotatably attached to the third slidable unit, wherein the base tray is fixed to at least a portion of the medium discharging device.

3. A medium discharging device comprising: a discharging unit that discharges a medium towards a medium discharging direction in which the medium is discharged; and a medium receiving tray that receives the medium discharged by the discharging unit, wherein the medium receiving tray includes a base tray; a first slidable unit that is slidably connected to the base tray, and that is configured to have a first accommodated state, and a first extended state, wherein when the first slidable unit is slid into the first extended state by pulling the first slidable unit in the medium discharging direction, the first slidable unit is located further in the medium discharging direction than when the first slidable unit is in the first accomodated state; and a second slidable unit that is slidably connected to the first slidable unit, and that is configured to have a second accommodated state, and a second extended state, wherein when the second slidable unit is slid into the second extended state by pulling the second slidable unit in the medium discharging direction, the second slidable unit is located further in the medium discharging direction than when the second slidable unit is in the second accomodated state; a third slidable unit that is slidably connected to the second slidable unit, and that is configured to have a third accommodated state, and a third extended state, wherein when the third slidable unit is slid into the third extended state by pulling the third slidable unit in the medium discharging direction, the third slidable unit is located further in the medium discharging direction than when the third slidable unit is in the third accomodated state; and a stopper that is rotatably attached to the third slidable unit, wherein the stopper is rotatably attached to the third slidable unit so to rotate in the medium discharging direction when the stopper rotates away from the third slidable unit.

4. A medium discharging device comprising: a discharging unit that discharges a medium towards a medium discharging direction in which the medium is discharged; and a medium receiving tray that receives the medium discharged by the discharging unit, wherein the medium receiving tray includes a base tray; a first slidable unit that is slidably connected to the base tray, and that is configured to have a first accommodated state, and a first extended state, wherein when the first slidable unit is slid into the first extended state by pulling the first slidable unit in the medium discharging direction, the first slidable unit is located further in the medium discharging direction than when the first slidable unit is in the first accomodated state; and a second slidable unit that is slidably connected to the first slidable unit, and that is configured to have a second accommodated state, and a second extended state, wherein when the second slidable unit is slid into the second extended state by pulling the second slidable unit in the medium discharging direction, the second slidable unit is located further in the medium discharging direction than when the second slidable unit is in the second accomodated state; a third slidable unit that is slidably connected to the second slidable unit, and that is configured to have a third accommodated state, and a third extended state, wherein when the third slidable unit is slid into the third extended state by pulling the third slidable unit in the medium discharging direction, the third slidable unit is located further in the medium discharging direction than when the third slidable unit is in the third accomodated state; and a stopper that is rotatably attached to the third slidable unit, wherein the stopper is rotably attached to the third slidable unit so that when the stopper is in an extended position, the stopper is subtantially perpendicular to the third slidable unit so as to stop the medium from moving further in the medium discharging direction.